Home / 78,544,410,664.32-117,816,617,555.41-18,853,072,938.22

Finding the Fourth Proportional to 78,544,410,664.32, 117,816,617,555.41 and 18,853,072,938.22

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Solution

The fourth proportional to 78,544,410,664.32, 117,816,617,555.41 and 18,853,072,938.22 is: 28,279,609,781.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,544,410,664.32 : 117,816,617,555.41 = 18,853,072,938.22 : x
  2. Step 2: Convert to fraction form
    78,544,410,664.32/117,816,617,555.41 = 18,853,072,938.22/x
  3. Step 3: Cross multiply
    78,544,410,664.32x = 117,816,617,555.41 × 18,853,072,938.22
  4. Step 4: Simplify right side
    78,544,410,664.32x = 2,221,205,284,105,926,737,920
  5. Step 5: Solve for x
    x = 2,221,205,284,105,926,737,920/78,544,410,664.32
  6. Step 6: Final answer
    x = 28,279,609,781.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.